Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDPOL32_2L Availability: In the manufacturer's stock Price on request - + Recommended M-CHCT-250 Calibration tool for M-CTE250I, pk 4 Price on request U-COV07 O-Ring, low-emission, size007, pk 10 (TD autosampl Price on request P-00040 VOC-Mole assembly, 830mm,pk10 Price on request